<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Apache Tomcat WebSocket Examples: Chat</title>
<style type="text/css">
input#chat {
	width: 410px
}

#console-container {
	width: 400px;
}

#console {
	border: 1px solid #CCCCCC;
	border-right-color: #999999;
	border-bottom-color: #999999;
	height: 170px;
	overflow-y: scroll;
	padding: 5px;
	width: 100%;
}

#console p {
	padding: 0;
	margin: 0;
}
</style>
<script type="application/javascript">
	
	
        var Chat = {};
 
        Chat.socket = null;
 
        Chat.connect = (function(host) {
            if ('WebSocket' in window) {
                Chat.socket = new WebSocket(host);
            } else if ('MozWebSocket' in window) {
                Chat.socket = new MozWebSocket(host);
            } else {
                Console.log('Error: WebSocket is not supported by this browser.');
                return;
            }
		       
 			Chat.socket.onopen = function () {
	            Console.log('Info: WebSocket connection opened.');
	            document.getElementById('chat').onkeydown = function(event) {
	                if (event.keyCode == 13) {
	                    Chat.sendMessage();
	                }
	            };
	        };
	 
	         Chat.socket.onclose = function () {
	             document.getElementById('chat').onkeydown = null;
	             Console.log('Info: WebSocket closed.');
	         };
	
	         Chat.socket.onmessage = function (message) {
	             Console.log(message.data);
	         };
 		 });
 
        Chat.initialize = function() {
            if (window.location.protocol == 'http:') {
                Chat.connect('ws://' + window.location.host + '/ws_demo1/chat');
            } else {
                Chat.connect('wss://' + window.location.host + '/ws_demo1/chat');
            }
        };
 
        Chat.sendMessage = (function() {
            var message = document.getElementById('chat').value;
            if (message != '') {
                Chat.socket.send(message);
                document.getElementById('chat').value = '';
            }
        });
 
        var Console = {};
 
        Console.log = (function(message) {
            var console = document.getElementById('console');
            var p = document.createElement('p');
            p.style.wordWrap = 'break-word';
            p.innerHTML = message;
            console.appendChild(p);
            while (console.childNodes.length > 25) {
                console.removeChild(console.firstChild);
            }
            console.scrollTop = console.scrollHeight;
        });
 
        Chat.initialize();
 
        document.addEventListener("DOMContentLoaded", function() {
            // Remove elements with "noscript" class - <noscript> is not allowed in XHTML
            var noscripts = document.getElementsByClassName("noscript");
            for (var i = 0; i < noscripts.length; i++) {
                noscripts[i].parentNode.removeChild(noscripts[i]);
            }
        }, false);



</script>
</head>
<body>
	<div class="noscript">
		<h2 style="color: #ff0000">Seems your browser doesn't support Javascript! Websockets rely on Javascript being enabled. Please enable Javascript and reload this page!</h2>
	</div>
	<div>
		<p>
			<input type="text" placeholder="type and press enter to chat" id="chat" />
		</p>
		<div id="console-container">
			<div id="console" />
		</div>
	</div>
</body>
</body>
</html>